Thanks again for any diagrams or tips sent in.  If any are used I'll be sure to give credit at the end of the diagram chart.  Any tips, suggestions or other materials on this page are to be used at your own risk.  Pitnet doesn't guarantee any of these charts.  Always use a Multi-meter and test all circuits before cutting, splicing, or tapping into.

Domestic Vehicles

Buick:

Chevrolet:

Dodge:

Ford:

General Motors Corp:

Mercury:

Oldsmobile:

Pontiac:

Saturn:

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Import Vehicles

Honda:

Infiniti:

Mazda:

Subaru:

Toyota:

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Factory wiring colors for the 1996 Buick LeSabre, Park Avenue and Oldsmobile 88

Vehicle Curcuit Color Polarity Location
Starter Yellow or violet Positive + Steering column
Ignition Pink Positive + Steering column
Heater/AC Orange Positive + Steering column
Interior light * Tan
Blue
Negitive -
Negitive -
Driver's kickpanel
Passenger's kickpanel
Parking light Brown Positive + Driver's kickpanel
Power door locks Light blue Positive + Driver's door jamb harness or under glove box
Brake light White or light blue Positive + Brake switch
Tachometer White or violet/white AC Coil module
Left front window up Blue Reverse Driver's switch
Left front window down Brown/white Reverse Driver's switch
Right front window up Blue/white Reverse Driver's kickpanel or driver's switch
Right front window down Tan Reverse Driver's kickpanel or driver's switch
Left rear window up Green Reverse Driver's kickpanel or driver's switch
Left rear window down Violet Reverse Driver's kickpanel or driver's switch
Right rear window up Light green Reverse Driver's kickpanel or driver's switch
Right rear window down Violet/white Reverse Driver's kickpanel or driver's switch

Note: *Tap both interior light wires.  Do not tap common domelight wire (white). Vehicle battery saver creates false alarms.


Factory wiring colors for the 1997 Chevrolet Venture, Oldsmobile Silhouette and Pontiac Trans Sport

Vehicle Curcuit Color Polarity Location
Starter Yellow Positive + Ignition switch harness
Ignition White Positive + Ignition switch harness ***
Heater/AC Orange Positive + Ignition switch harness ***
Interior light Gray/black Negitive - Body Control Module (BCM) ****
Parking light Brown Positive + Headlight switch
Power door lock Light blue Negitive - 10-way connector/driver's kickpanel
Power door unlock White Negitive -
Power-sliding side door Pink Negitive - ***** At switch on dashboard
Brake light White or light blue Positive + Brake switch
Headlights Yellow Positive + Headlight switch
Tachometer White AC Powertrain Control Module (PCM) ******
Reverse light Light green Positive + Connector left of steering column
Left front window up Dark blue Reversal at ground Driver's switch
Left front window down Brown Reversal at ground Driver's switch
Right front window up Light blue Reversal at ground Driver's kickpanel or driver's switch
Right front window down Tan Reversal at ground Driver's kickpanel or driver's switch
12-Volt constant Red * Positive + Ignition switch harness **
12-Volt ignition Pink Positive + Ignition switch harness
Accessory Brown Positive + Ignition switch harness

Notes: *The two red wires are separate circuits, one fused at 60 amps and the other at 40 amps.  **Access the ignition switch harness by removing the lower dash trim panel and upper and lower steering column covers.  ***Orange ignition #2 powers heater/AC; white ignition #3 powers instrument cluster.  ****Domelight wire covers all doors.  Alternate door trigger circuit: tan(driver's door), dark blue (passenger door and liftgate) and orange (sliding door) at BCM below passenger dash.   All are negitive circuits and must be diode isolated (cathode or band side of diode to OEM wires). *****On remote, negative pulse to open/close door. ******PCM located on driver's front of engine, in air cleaner housing.


Factory wiring colors for the 1997 Ford Explorer and Mercury Mountaineer

Vehicle Curcuit Color Polarity Location
Starter Red/light blue Positive + Ignition switch harness
12-Volt constant Yellow and yellow * Positive + Ignition switch harness
Ignition Light green/purple Positive + Ignition switch harness
Ignition #2 Gray/yellow Positive + Ignition switch harness **
Factory disarm Dark green/purple Negitive - Driver's kickpanel or at RAP module behind driver's dash
Interior light Black/light blue Negitive - At courtesy light ***
Parking light White/black or
Brown
Positive + At headlight switch or Driver's kickpanel
Power door lock Pink/yellow Negitive - Driver's kickpanel
Power door unlock Pink/light green Negitive -
Brake light Light green Positive + At switch above brake
Headlight Red/yellow Positive + At headlight switch
Tachometer Blue/red or
Tan/yellow
AC At driver's side coil or Powertrain Control Module (PCM) ****
Accessory Black/light green Positive + Ignition switch harness
Left front window up White/black Reversal rest at ground Driver's switch
Left front window down Red Reversal rest at ground Driver's switch
Right front window up White/yellow Reversal rest at ground Driver's switch
Right front window down Tan/light blue Reversal rest at ground Driver's switch
Left rear window up Gray/orange Reversal rest at ground Driver's switch
Left rear window down Yellow/blue Reversal rest at ground Driver's switch
Right rear window up Yellow/black Reversal rest at ground Driver's switch
Right rear window down Red/black Reversal rest at ground Driver's switch

Note: *The two yellow 12-volt constant wires are one circuit and fused at 60 amps.  **Two gray/yellow ignition #2 wires are present-both are one circuit. ***The black/light blue domelight wire is also found at the interior light switch.  ****PCM located in passenger rear corner of engine compartment.   Tan/yellow tach wire is at pin #48.


Factory wiring colors for all 1995-96 Saturn Models

 

Vehicle Curcuit Color Polarity Location
Starter Yellow Positive + Ignition switch harness
12-Volt constant Red and red * Positive + Ignition switch harness
12-Volt ignition Pink Positive + Ignition switch harness
Ignition #2 Orange Positive + Ignition switch harness
Trunk/hatch trigger Red/black Negitive - At trunk light
Trunk/hatch release Gray Positive + *** Driver's kickpanel or at keyless entry module
Interior light White Negitive - Center console **, at fuseblock or driver's side "B" pillar
Parking light Brown Positive + Center console or headlight switch
Power door lock **** Light blue Positive + Center console or driver's kickpanel
Power door unlock **** White Positive +
Brake light Light blue Positive + At switch above brake
Headlight Dark blue (low)
and pink (high)
Positive + At headlight switch
Tachometer White AC Powertrain Control Module (PCM) *****
Accessory Brown Positive + Ignition switch harness
Left front window up Dark blue Reversal rest at ground Driver's switch
Left front window down Brown Reversal rest at ground Driver's switch
Right front window up Light blue Reversal rest at ground Driver's switch
Right front window down Tan Reversal rest at ground Driver's switch
Left rear window up Light green Reversal rest at ground Driver's switch
Left rear window down Purple Reversal rest at ground Driver's switch
Right rear window up Light green Reversal rest at ground Driver's switch
Right rear window down Purple Reversal rest at ground Driver's switch

Note: *The two red wires are separate circuits, both fused at 30 amps each.  **The side panels for the center console have velcro on one side and are easily removed.  ***For the Saturn Wagon, the release is positive at the lever hatch on thr side of the driver's seat.  All other Saturn models use a cable release.  ****At relays.  *****PCM located behind driver's dash.


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Matt Pitman